Gun sight



Nov. 20, 1951 M. P. BUEHLER GUN SIGHT Filed Aug. 5, 1949 FIE-.1-

v INVENTOR. mrhmo P500145 Patented Nov. 20, 1951 UNITED Zfl b HU UH STATES PATENT OFFICE 2 Claims.

This invention relates to gun sights, and more particularly to a detachable or auxiliary sight to be substituted for a telescopic sight should the latter become damaged or be removed for other reasons.

It is among the objects of the invention to provide a detachable or auxiliary gun sight of small size and light weight which can be quickly and easily mounted on a telescopic sight mount when the telescopic sight is removed, which auxiliary sight is fullyadjustabl for elevation and windage, comprises a minimmnumber oi si mple par'tsTa nd is easily manufactured to fit difierent types of telescopic sight mounts.

. Other objects and advantages will become apparent from a consideration of the following description and the appended claims in conjunction with the accompanying drawing, wherein:

Figure 1 is a side elevation of a fragmentary portion of a gun showing a telescopic sight mount thereon and an auxiliary gun sight illustrative of the invention operatively mounted on the telescopic sight mount;

Figure 2 is a top plan view of the telescopic sight mount and the auxiliary gun sight illustrated in Figure 1;

Figure 3 is a side elevation of the rear portion of the telescopic sight mount and of the auxiliary sight with a portion of the auxiliary sight broken sight mount and the auxiliary gun sight illustrate the construction thereof;

Figure 4 is a rear elevation of the telescopic sight mount and the auxiliary gun sight;

Figure 5 is a transverse cross-section on an enlarged scale on the line 55 of Figure 2;

Figure 6 is a top plan view on an enlarged scale of the rear end portion of the telescopic sight mount;

Figure '7 is a face elevation of a sight plate constituting an operative component of the auxiliary sight mount;

Figure 8 is a side elevation of a button used in connecting the sight plate illustrated in Figure 7 to the support or base plate illustrated in Figure 9; and

Figure 9 is a perspective view of a supporting or base plate constituting an operative component of the auxiliary gun sight.

With continued reference to the drawing, the telescopic sight mount is generally indicated at 10 and comprises a rigid, metallic body of elongated, rectangular, cross-sectional shape having an elongated, rectangular cross-section. Intermediate its length this body is provided with an elongated notch l l extending inwardly from one side of the body so that the body has a rectangular front-end portion l2, a rectangular rear-end portion l3, and an intermediate portion l4 interconnecting the front and rear end portions. The front-end portion I2 is cylindrically recessed on its under side to receive the upper portion of a rifle barrel and is provided with two spaced-apart screw holes [5 which receive screws for attaching the mount to the rifle barrel. Near its front end the portion I2 is provided with an opening [6 to receive the post of a telescopic sight and between this opening I6 and its front end the porion I2 is centrally split, as indicated at l 1, and a clamp screw l8 extends transversely through the split portion to clamp the telescopic sight post in the opening I5.

The rear portion I3 is also recessed to receive the upper part of the rifle barrel and is provided with an opening for a screw 19 which attaches the rear part of the mount to the rifle barrel.

The notch II provides clearance for the cartridge ejector mechanism of the rifle. Near its rear end the mount I0 is provided with a transverse aperture 20 and this aperture is provided in its respectively opposite ends with oppositelydirected screw threads. Two windage screws 2| and 22 are threaded into the respectively-opposite ends of the transverse aperture 20 and each of these screws has an enlarged, cylindrical head 23 provided in its outer surface with a screw driver slot 24 and having its inner surface circularly concave, as indicated at 25. Counterbores are provided in the respectively-opposite ends of the aperture or bore 20 to receive the heads of the screws 2| and 22. The screws 2| and 22 are windage adjustment screws and when a telescopic sight is mounted on the mount l0 these screws engage a plate or pedestal near the rear end of the sight to pivot the telescopic sight slightly about the axis of the post received in the opening Hi to compensate the rifle sight for windage. Elevation adjustment means are included in the telescopic sight itself.

While the sight mount in has been described in detail, this is a known construction and does not constitute any part of the present invention except in the combination thereof with the detachable or auxiliary sight, the auxiliary sight being adaptable to various types of telescopic sight mounts.

The auxiliary sight itself comprises, in general, an elongated, rectangular base plate or sight holder 26, a flat sight plate 21, an elongated, rectangular button 28, a screw 29 and a coiled compression spring 30.

The sight holder 26 is particularly illustrated in Figure 9 and comprises, a fiat, elongated, rectangular plate having at one end a downwardlyturned, perpendicularly-extending flange or supporting member 3| provided with a substantially centrally located, internally screw-threaded aperture or screw hole 32. The base plate is provided intermediate its length and in its respectively-opposite longitudinal edges with notches 33 and 34 providing beveled portions 35 and 36 which are respectively receivable in the concave inner surfaces of the heads of the screws 2| and 22, so that by placing the plate 26 on the top of the rear portion |3 of the mount l9 and tightening the windage screws 2| and 22 against the opposite sides of the plate with the portions 35 and 36 received in the concave inner surfaces of the screw heads, as particularly illustrated in Figure 5, the plate 2'3 can be firmly attached to the mount II] for the telescopic sight when the telescopic sight has been removed from the mount. The windage screws 2| and 22 are threaded into the mount substantially equal distances, so that the plate 26 is centered, as nearly as practicable, relative to the longitudinal center line of the mount ID.

The outer surface of the flange 3| is provided with fine serrations 31 which extend perpendicularly to the end of the flange.

The sight plate 21 is a generally square or rectangular plate having its opposite corners at the same end cut away on an angle of approximately iii-degrees and joined by an arcuate curve at the center of the plate to provide a somewhat triangular shape at the upper end of the plate. A sight hole or opening 38 is provided substantially at the center of the area of this triangular upper portion of the plate 21, and immediatelybelow the sight opening 38 the plate is provided with an enlarged, rectangular notch 39. On one side the sight plate 21 is provided with fine serrations 40 which are disposed substantially perpendicularly to the bottom end of the plate and on its opposite side, as particularly illustrated in Figure 4, it is provided with serrations 4| which run substantially parallel to the bottom edge of the plate.

The button 28 is an elongated, rectangular body having a flat inner surface provided with fine serrations 42 which run substantially parallel to the longitudinal side edges of the button and provided with a double beveled outer surface. A bore 43 extends centrally through the button 28 and a counterbore 44 is provided in the bore 43 at the end of the latter opening to the outer surface of the button.

A coiled spring 30 is seated in the counterbore 44 and bears at one end against the inner end of the counterbore. The screw 29 extends through the spring, through the button 28, through the notch 39 in the sight plate 21, and is threaded into the screw hole or aperture 32 in the flange 3| of the base plate 26. This screw has a head which bears against the outer end of the spring 30 and is of a size to marginally engage the button 28 around the counterbore 44 when the screw is tightened.

After the base plate 26 with the sight plate 21 assembled thereon by the screw 29 and button 28, is mounted on the telescopic sight mount H1 in the manner indicated above, the sight plate may be adjusted to compensate the rifle for elevation and windage. This is accomplished by slightly loosening the screw 29 so that the sight plate 21 is clamped between the button 28 and the flange 3| by spring pressure only. The sight plate may now be forced upwardly relative to the base plate and as the serrations 4| of the sight plate pass the serrations 42 of the button 28, a slight click will be produced for each step or movement of the sight plate relative to the button. The serrations are so graduated that a movement of the sight plate corresponding to the width of one serration will produce-a known deflection of the shot at a predetermined distance. For example, one step of the sight plate may raise'the shot a distance of one-and-one-half-inches at a range of one-hundred yards. The sight plate may also be moved laterally of the base plate and when such movement is imparted the serrations 49 will pass over the serrations 31 on the flange 3| of the base plate. The serrations 49 and 31 are also graduated to produce a known deflection at a given range, so that the sighting of the rifle can be accurately adjusted for both elevation and windage by proper movement of the sight plate 21 in vertical and horizontal directions. After the proper setting of the sight plate has been obtained, the screw 29 is tightened to firmly lock the sight plate in fixed relation relative to the base plate 26. The notch 39 in the sight plate is of suflicient size to provide the necessary range of adjustment of the sight plate relative to the base plate and the fine serrations on the opposite sides of the sight plate provide a light-defleeting surface which greatly reduces eye strain in sighting a rifle equipped with the detachable or auxiliary sight of the present invention. The entire structure of the auxiliary sight is also preferably given a dark, non-reflecting surface finish to further reduce eyestrain on the marksman using the sight.

The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiment is, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are, therefore, intended to be embraced therein.

What is claimed is:

1. A detachable gun sight for mounting on a telescopic sight mount comprising an elongated, rectangular plate having at one end a perpendicularly-extending flange provided with a centrally-located, internally screw-threaded aperture, said plate havingintermediate its length and in its respectively-opposite longitudinal edges notches providing portions engageable by the windage screyv s,,o f a telescopic sight mount, a sight plate having a screw-receiving notch and a sight opening therein overlying the flange of said first-mentioned plate with said screw-receiving opening in registry with said internally screwthreaded aperture, a button overlying said sight plate opposite said first-mentioned plate flange and having a centrally located bore in registry with said screw-receiving opening and a counterbore in one end of said bore, a coiled spring in said counterbore, and a screw extending through said spring, said button and said second plate and threaded into the screw-threaded aperture in the flange of said first-mentioned plate, said screw having a head which bears against the outer end of said spring and marginally engages said button around said counterbore when said screw is tightened against said button.

2. A detachable gun sight for mounting on a telescopic sight mount comprising an elongated,

rectangular plate having at one end a perpendicularly-extending flange provided with a centrally-located, internally screw-threaded aperture. said plate having intermediate its length and in its respectively-opposite longitudinal edges notches providing portions engageable by the windage screws of a telescopic sight mount, a sight plate having a screw-receiving notch and a sight opening therein overlying the flange of said first-mentioned plate with said screw- -receiving opening in registry with said internally screwthreaded aperture, a button overlying said sight plate opposite said first-mentioned plate flange and having a centrally located bore in registry with said screw-receiving opening and a counterbore in one end of said bore, a coiled spring in said counterbore, and a screw extending through said spring, said button and said second plate and threaded into the screw-threaded aperture in the flange of said first-mentioned plate, said screw having a head which bears against the outer end of said spring and marginally engages said button around said counterbore when said screw is tightened against said button, said sight plate having on one side flne serrations extending substantially perpendicular to the bottom end thereof and on its opposite side fine serrations extending substantially parallel to such bottom end, said button having on its side contacting said sight plate fine serrations extending substantially parallel to the longitudinal side edges thereof, and said flange having on its outer side flne serrations extending substantially parallel to the end thereof.

MAYNARD P. BUEHLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 890,980 Hendrickson June 16, 1908 1,448,922 Fitzgerald Mar. 20, 1923 2,024,779 Ringquist Dec. 17, 1935 2,108,150 Swebilius Feb. 15, 1938 2,187,054 Redfield Jan. 16, 1940 2,365,976 Sorensen Dec. 22, 1944 2,452,592 Meyer Nov. 2, 1948 FOREIGN PATENTS Number Country Date 246,540 Great Britain 1926 

